Amateurs argue the case few professionals can agree on, with a speck of a dogma thrown in here and there.
On a side note: Ford is not only a 'manufacturer', it needs to sell the product, and, along the way, avoid Gov penalties.
As for 7% variance in mpg, check your spark plugs, tire pressure and get a good graphing code reader.
Good point on lower rpm and higher torque..
After Ford moved to lower viscosity, it had to increase sump capacity by 20% in Panthers. Use your head instead of repeating hearsay with authority.
On a side note: Ford is not only a 'manufacturer', it needs to sell the product, and, along the way, avoid Gov penalties.
As for 7% variance in mpg, check your spark plugs, tire pressure and get a good graphing code reader.
Good point on lower rpm and higher torque..
After Ford moved to lower viscosity, it had to increase sump capacity by 20% in Panthers. Use your head instead of repeating hearsay with authority.